Dovecot Antispam plugin pipe script example

#!/bin/bash

#export PATH=$PATH:/usr/lib/dovecot

#MYENV=$(env)

# Add "starting now" string to log.
echo "$$-start ($*)" >> /tmp/sa-learn-pipe.log

#echo "ENV value is: $MYENV" >> /tmp/sa-learn-pipe.log

#echo "PATH value is: $PATH" >> /tmp/sa-learn-pipe.log

CURRENT_USER=$(whoami)

#echo $* > /tmp/sendmail-parms.txt
# Copy the message contents to a temporary text file.
#cat<&0 >> /tmp/sendmail-msg-$$.txt

mode=
for opt; do
        echo "Checking if the command-line input argument string ($*) contains the string \"ham\" or \"spam\"" >> /tmp/sa-learn-pipe.log
        if [[ "$*" =~ .*ham.* ]]
        then
            mode=HAM
            break
        elif [[ "$*" =~ .*spam.* ]]
        then
            mode=SPAM
            break
        else
            echo "Mode (HAM or SPAM) cannot be determined from command-line arguments; check the calling script" >> /tmp/sa-learn-pipe.log
            exit 0
        fi
done

echo "Mode is \"$mode\"" >> /tmp/sa-learn-pipe.log

if test -n "$mode"; then
        echo "Calling (as user $CURRENT_USER) '/usr/lib/dovecot/deliver -d \"sa-training@example.com\" -m \"Training.$mode\" -p \"/tmp/sendmail-msg-$$.txt\"'" >> /tmp/sa-learn-pipe.log

        # options from http://wiki.dovecot.org/LDA
        #strace -f -F /usr/lib/dovecot/deliver -d "sa-training@example.com" -m "Training.$mode" -p "/tmp/sendmail-msg-$$.txt" >>/tmp/strace.txt 2>&1

        /usr/lib/dovecot/deliver -d "sa-training@example.com" -m "Training.$mode"

        echo "Exit status was $?" >> /tmp/sa-learn-pipe.log
fi

# Remove the temporary message.
##rm -f /tmp/sendmail-msg-$$.txt

# Add "ending now" string to log.
echo "$$-end" >> /tmp/sa-learn-pipe.log

# Exit with "success" status code.
exit 0